Transmitting apparatus for electric telegraphs and the like.



L. M. POTTS, TBANSMITTIMG APPARATUS FOR ELECTRIC TELEGRAPHS AND T us me.Pateimd APPLICATION FILED OCT. 18. "I3- 5 sma'ns suicr I.

W on 00 o o 00 a0 L. POTTS.

l M a 2n 1 O M H M M n L n F. M H T m Mzfl P ,8 H P 3 GM Ell l Ea Tl NTRC o 0 E: LL n M n A c L .DI P A mnsmnmdnmmrus 1,258,809.

gig?? L. M. POTTS.

TRANSMITTING APPARATUS FOR ELECTRIC TELEGRAPHS AND THE LIKE.-

Patented Mir. 12, 1918.

5 SHEETS-SHEET 3- 1 APPLICATIOI m L18. ml

. .L. M. POTTS. JRANSMIHING APPARATUS FOR ELECTRIC TELEGRAPHS AND THELIKE.

' as in an ordinary.) typewriter.

this is not practicable, should be occupied to get the required speed.

LOUIS MAXWELL POTTS; OF BALTIMORE, MARYLAND, AS$IGNOR TO AUSTINMcLANAHAN, 0F BALTIMORE, MARYLAND.

TRANSMITTING APPARATUS" FOR ELECTRIC TELEGBAPHS AND THE LIKE.

Specification of Letters Patent! I Patented Mar, 12,1918.

Application fled October 18, 1913. Serial No. 796,006.

To all whom it may concern:

Beit known that I, LOUIS MAXWELL, lorr s, a citizen of the UnitedStates, residing at the city of Baltimore and State'of Maryland, haveinvented certain new and useful Improvements in Transmitting Apparatusfor Electric Telegraphs and the like, of which the following is aspecification.

The primary object of this invention is to provide a keyboard controlledtransmitter for telegraph circuits, which will rmit the operator tooperate the keyboar at an irregular rate or even stop operatingaltogether for a considerable interval, and yet permit a uniform rate ofline transmission, and this without the use of a erforated tape.

In my machine, the lreyboard is perfectly free and does not require alock asis the case with all multiplex systems and most other machinesystems which use keyboard transmission. The ,operation of the keyboardin my machine is, therefore, as free Moreover, wi my machine may stopfor a considerable len the operator h of time 'for the purpose ofreading an arranging copy, checking ofl and marking messages, withoutinter ering with the rate of line transmission. This has heretofore beena rather serious difiiculty in the case of direct keyboard transmission.}-In the Morse system transmit with one hand,

the operator can while marking or checking ofi with the other hand 'themes sage previously sent, but with a keyboard since both hands It ispossible with my machine to so regu late the rate of line transmissionthat the operator will be able to keep the line entirely bus and therebylose no line capacity.

y machine has the further advantage that errors of keyboard operationcan be corrected before transmission. In the case of the de ression of awrong key, the combination 0 code elements set up can be replaced andreset correctly before actual transmis sion to line takes place.

My machine possesses an economical ad- 'vantage over tape transmittingsystems in that the cost of the tape is saved, and the apparatus issimpler.

While the primary object of this invention is as above stated, it isapplicable to various other uses, all within. the scope ofv my inventionas set forth in the accompanying claims.

' In order that my invention may be better understood, I shall nowdescribe a specific embodiment-thereof in detail, to accompanv thedrawings wherein:

Figure 1, is a top plan view of one form of machine embodying myinvention, with a portionof the keyboard broken away:

Fig. 2, a vertical sectional elevation thereof;

Fig. 3, a detail side elevation of the spacing contact mechanism;

Fig. 4, a detail front elevation of said contact mechanism with thecombination bars which actuate it shown in section;

Fig. 5, a detail vertical section of the transmitter carriage with keys3, rl'anged after the fashion ofthe standard typewriter keyboard, andeach of these keys adjacent its rear end has a beveled upper edge 4.

Extending transversely across all'said kev levers and lying above thebeveled portions 4 thereof, is a series of eight longitudinally slidablecombination bars 5, supported near eachcnd upon pins 6 passing throughslots 7 in said levers and mounted between plates 8 and 9- secured fastto the machine frame, said, plates being slotted as at 10 "to act ases'for the key levers. Each of these combination bars is provided on itslower edge withfaseries of cam faces 11 slanting upward-from right toleft, and adapted to be engaged by the beveled edges 4 of the key leverswhen the latter are operated. These cams are arranged on the lower edgesof ed on the top plate 160i the machine frame, is a circular plate 28.having an annular] to the machine frame.

'this sprocketand rotatable about a common each key lever shifts acertain one or combination of these bars to the r1 ht, The operation ofcombination .ars in this manner, however, is old and well known in toright, and so arranged that when a ven combination bar is shifted, asabove escribed,these cams will occupy such position above the unoperatedkey levers as to revent the operation of two keys at once. othing new,however, is here claimed for this arrangement.

Each combination bar has on its upper edge a camv 13, and each of thesecams is in operative relation, respectively, with one H of a series ofeight levers 14. These levers are in turn in operative relation witheight "wirtically slidable rods 15, the lower extremities of which liedirectly above levers 14, near their free ends. The rods 15 are guidedvertically by a plate 16 and a bracket 17 through which they pass, saidrods resting by means of shoulders 18 upon said bracket, and shoulders19 upon plate 16. Supporting some of the rods on shoulders '19 andothers on-shoulders 18 is merely for the purpose of allowing roomforsaid shoulders.

The upper ends of rods 15 lie, respectively, beneath upturned endsofeight levers Qt'hthe' tails of" which levers are wedge shaped as at21, where the separate, as later described, with a kni e edge 22 securedto an arm 23 pivoted asat 24 (see Fig. 1), and operatively connected toa rod 25 adapted to be operated. by a. plunger magnet 26. v v 1 Fastupon stationary brackets 27,1uountcircular recess 29 (Fig. 2) forming aflange 30. Adapted to rotate within this recess and supported upon thesaid flange ,is a flat ring 31 a a l his r1ng31 carries ad acentitslnner edge a 88129501 equally spaced pins 32 fast;

thereto andextending entirely around the ring. These pins engagq'withthe teeth of a sprocket 33 rotatable upon a pivot 34 fast axistherewith, isa ratchet 35with which is adapted to engage a pawl 36,pivoted upon arrarm 37,. which in turn is pivoted upon. the axis of saidratchet. Arm 37' is normally held against an adjustable stop 38 by astrong spring 39, and its movement away from said step is limited by anadjustable stop 40. This arm 37 it: in operative relation with plungerrod-25, so that the 0 era- I 121011 of magnet 26 acting through sai rodFastened rigidly to,

the distance of which will be hereinafter more particularly referred to.V

Extending transversely through ring 31, and slidable friction tighttherein, are a. multiplicity of groups of permutation elements in theform of pins 41, eight pins in each group, and said groups arranged instraight lines radiating from the central axis of ring 31.

In actual practice, the machine herein described has 216 such groups ofpins, but in the drawings a few only of these are shown, it beingunderstood that these groups of pins extend entirely around the ring 31,or as far around the same as desired. These groups of pins are equallyspaced apart, and corresponding pins of the several groups lie in eightcircles struck from the center of ring 31.

Pins 41 are adapted to come into alinoment, respectively, with theupturned ends of the eight levers 20 audio be operated thereby as laterdescribed. The function of these pins is to operate in variouscombinations a'series of movable transmitting contacts 12. Thesecontacts, each of which comprises a small spring, a'rc mounted suitablyinsulated from each other upon a transmitting head or contact carriage43. Contacts 12 are adapted to move between and alternately engagerelatively stationary pairs of contacts 44 and 45 also mounted upon saidcarriage (see Fig. 5). These relatively stationary contacts are mountedupon metal supports 46. 47 and -18, insulated from each other and fromthe other parts of the frame of the carriage.

Contacts 42 are adapted to be operated by pins 41 through the medium ofeight levers 49 fl'ilcrumed on a common support 50 on the contactcarriage (see Fig. 5). One-half of these. lovers have straight ends 51,and the otherhalf hooked ends 52. The contacts 42 are arranged in twogroups of four each; and the levers havlng straight ends acting to pusii-t-he ir s aid contacts, and the in operation, since the upper ends oflevers 49 all i'riove i: the same direction in being operated by pins41. The "levers 49 have insulated tips 53 (Fig. 8), so that they do notmake electrical connection with spr ng contacts 42. Each lever 49termihooked ends adapted td'p'u'll'their-"contacts--- rasasoo hates atits lower end in a downwardly exover one row of ins 41 and normally justtending finger 54 and the levers are so above the tops said pins whenthey prospaced that these fingers travel respectively, trade throu h thering 31 in their set posi- 1n the paths of thepins 4:1; that is, in thetions. This ever-is pivotally mounted upon 5 travel of. the contactcarriage, thefingcrfl a studf84 carried by a bracket 85 fast on 70 5%travehngip'the-cight circles inwhich the the inaehine frame. The end oflever 82 p1ns'41 are arranged; a opposite extension 83 has a bevelededge The lower portion of each lever 49, in 86 (see.Figs. 8 and 10)adapted to engage its; norm position abuts againsta stop 55. with knifeedge 22. When said knife edge 10. M engages the beveled end of lever 82,its ex- 75 The t nsnuttlng contact carriage is tension 83 is forceddownward upon and mounted f on the outer end of an arm 56, returns tonormal any pins which may have fastto a s eeve- 57, which is rotatableand been set. V -vert1cally.movab1e on a stud 58 fastened Each,combination bar also carries on its 1 5' ng1dly tothh machine frame.upper edge a in-8 7 (see Figs. 3 and 4), 80 Arm 56 is normally held upso that the the function-1o which is to operate a spac- -lowerextremities of the levers 49 clear pins ing contact each time one ormore of sai il when-the latter are pushed up, and this bars is" --slidforward. The mechanismby is effected by means of a spring 59 acting.which [these pins thus operate the spacing through a magnet armature 60,having a contact. comprises, among other parts, a 85 yoke 61 adapted toengage with two annu pivoted yoke 88, straddling all of said comlarflanges 62 on sleeve 57. bination barsf lafid lyin "directly in front Ane ectr o-magnet 63 made fast tothe of pins v87,-, antl-adapte to berocked on frame of the machine .is adapted tooperits ivots by 'perationof any of said ate armatureGO, and when this magnet is com inat; are.VfThisyoke is adapted, 9o energized, as hereinafter described, it willoperate through a pin act through. said armature tolower arm56, I donwardly extending arm of and thereby bring the fingers on thelowera-bcll'qylt l elf-9O, fulcrumed on a bracket ends of levers 49 intoposition to be engaged 91sec I v block of "insulation 92 fast by'pins41. "the mach-inc frame. "The, other arm of 95 Arm 56 carries a bellcrank lever 6a yer. s pted to operate upon a concrnmed thereon at 65,and havin an arm made fast to insulating block extending. over the upperedge 0% stud-58 hissp'rin carries a contact 94, which through an opening66 in sleeve 57. -'I;he adapted at times to engage with an adother endof this bell cranklever is {pivot/- u'sta'ble-rcontact 95, mounted uponan arm 10o ally connected, to a link-67, which-link isgjin cusses-"redto block 92.- Lever 90 operates turn pivotallyconnected to an arm'68;This conta cspring 93 through an insulating arm is fast to a spindle-69mounted to ro- 'tip' 97g v tate in a bracket70 fast to armfifi. Also InFig. 7 I' have indicated diagrammatifast tospindle 69v is anIesca'pement pawl 71, cally one form of code which maybe em- 1015 whichis-atlapted' to engage with the teeth ployed with my machine,r saiddiagram of a ratchet 72;"mounted for rotation -.on showing the venouscombinations in which arm bracket 70. Rigidly secured to this the pins41- may be operated' to form the ratchet and adapted to rotate on thesame different si als. In;this diagram the veraxisztherewith is asprocket 73, the teeth tical rowo dots indicated a, b, "a, d, e, f, d ofwhich are. adapted to engage with pins h, represent the row of pins 41,and the do a -32 onthe ring 31. beneath each of the characters along thetop The movement of link 67 to the right, of the diagram indicate thecombinations in Fig. 2,'-isagainst the tension of a spring-74, which thepins are'operated to transmit sig- 00 secured atpneend to a pin 75 onarm' 56, nals corresponding'to these'eharac ters. The 1'15 and at itsother end to a pin 76. on link 67. dots beneath the three blank spactisbetween Arm-56 is under tension horizontally of zero and-the character &represent the a spring 77 through a cord 78 attached at combinations inwlijlchthe pins are operated (me end to a drum 7 9, and at its other tofor sendi'n signals for formlng' certain op #5 the sleeve 57. ieration's w eh these signals are used for op- 12'0, The spring '77 maybe unwound by the erating a page printing machine to effect theoperation .of "annescapement pawl 80, on a l n1ng;spac1ng,andhackin ofthe-carriage, ratchet S1,:iftlSfllO the winding'shaft of said but sincesuch apparatus orms no part o spring; this invent on, furtherdescrlption along this 50 After pins 411 have been set and have openline is considered unnecessary. Thepms 41 a-Xcd upon th'e-tc'ontactlevers 4:9, they must ,may be operated in these'combmatlons for hereturned to normal before "they again any other desired purpose. sreachthe, setting point. 4 This -is accom gr From this dlagram may alsobe obtained piishedjby means ofa, lever 82 having a the positions of thecomblnation operating as transverse extension 83 adapted to extend cams11, on all of the comb nation bars 5.

. cal row of characters a to These combination bars correspond,respectively, to horizontal lines o posite the verti- I5 and the dots inthese horizontal lines, except the vertical row of eight dots at'theextreme left hand and ot the diagram, i to the relative polsitionsiofthe combi'at on cams on these ars.

It should be ,understood, however, that my invention is in no senselimited to this particular code.

One arrangement of the electrical connections is shown in Fig. 12, where98 represents in development a segmented transmitting commutator .whichis 1n permanent electrical connection with a collector ring 99 throughelectrically connected brushes 100 and 101, which we may assumearedriven by any suitable mechanism. Collector ring 99 connects totelegraph line 102, while the eight segments of commutator 98 areelectrically connected respectively to movable A transmitter contacts42. Alternate front and back stationary contacts Mend 45 are connectedto positive and negative of a1source .of current supply 103, grounded asshown.

This arrangement of electrical connections is old and well known in theart, and is not here claimed as new in itself; that; is, consideringcontacts 42, 44, .and 15, merely as electrical contacts, aside fromtheir relatlon.

to the improved transmitting mechanism herein shown and described. Asbrushes" 100 and 101 rotate, they transmit to-line current impulses fromthe source I 103, depending upon the state of contacts 42. If all ofthese contacts occupy the same, relative positions, as shown in Fi 12,alternate plus and minus impulses will brush 100 sweeps the segments ofcommutator 98 connected tosaid contacts. "The signals are transmittedbymovi 9; contacts 42 from the positionsshown in 12to their oppositecontacts. :in various combinations,

thus transmitting to line impulses reversed in polarity from the normal.This in itself is an-fold method of transmissions nd need? notbefurtherldescribed. 1 1 Adapted-td-travelwith the brushes-100 and "101are" other electrically connected brushes-104 and 105, which sweepcontact rings106an'd 107, respectivelv said rings being shovinindevelopment, The. ring 106 contains e space occupied bythe'eightnegative main'lll from said direct current not enter a e transmitted toline as the,

v gent 108, somewhat-' greater in H 1 nts of the commutator 9,8; and

this segment: 108 is permanently electrically connected to a. terminalof magnet '63., The other "terminal of this magnet; connects, through asuitable resistance 109, with-Yaw positive maiii'IIOlea ding from' alocal source of direct current. .The collector ring 107 is. permanentlyelectrically connected 'to the ed, through spaced contacts 94 and 95.ith a terminal of plunger magnet 26, the other terminal of whichconnectsthrough suitable resistance 112 to positive main 110,

Assuming the electrical connections to be as in Fig. 12, the operationof my improved transmitter is as follows:

The depression of a key 3 moves a certain one or combination of bars 5to the right as the operator faces the machine, and these in turn,acting through cams 13, move cor responding combinations of levers 14upward, and these in turn acting through rods 15, send the heads oflevers 2O upward in corresponding combinations. These levers 20, howeverat this time only move sufliciently far or their tails 21 to come belowthe knife edge 22.

The depression of any key causes the combination bars 5, acting throughpins 87 and yoke 88, to close the space contacts 94; and 95, thusenergizing magnet 26. This mag net will .then push the rod 25 outward,and, acting through arm 23, will cause the knife edge 22- to move towardthe tails of levers 20, engaging .theupper beveled faces of saidtailsand causing the heads of said levers to rise still farther in thesame direction in which they were moved by the rods 15. Knife edge 22asses over the tips of the set levers 20 an under the tips of those ofsaid levers which" are unset, or which do V 'ven-signal combination,thus looking all sa1d levers against further operation'u'ntil knife edge22 returns to normal, consequently I preventing interference with thecombination of pins already set by premature depression of another key.The heads of levers 20in thus rising, will push corresponding pins 41upward and cause the same to project above the u per face of ring 31.When pressure is re eased 'from the operated key, the operatedcombination bars ,5 return to normal by yoke 88 and spring 93 andcontacts 94 and 95 separate, thus deenergizingmagnet 26. 'When magnet 26becomes thus deenergized, spring '39, acting; through arm 37, pawl,36,"and ratchet 35, will cause the sprocket wheel 33 to rotate thering31' in the direction of the larger arrow Fig. 1, or in 'a clockwisedirection, the'IdiStance of one space; that is, the distance of oneradial line of pins 41 to the next,

thus'bringing-a; new line of pins in the setting positron. The ring 31thus rotating carries the'ar'm'56, along with it, the angular relationof this arm toy-said ring always "remaining: the same, independent offthje operation of-ma net 63 is not operat1ng,'or in other words, whennot transmitting. Arm 56in being ct 26, provided magthus moved, winds upthe: spring 77.

@Magnet63 is energized at regular inter-- vals, as brush 104 sweepssegment 108, and eac'h time so energized will cause sleeve 57 nabuoo andarm 56 to descend, at which time stud 58, acting through bell-crank 64:,sends link 67 to the right, Fig. 2, and in so doing lifts pawl 71 out ofthe teeth of ratchet 72 and allows spring 77 to rotate arm 56 afractional part of a step in the direction of the smaller arrow' Fig. 1.As the brush 104 passes from segment 108, spring 59 causes sleeve 57'torise This permits the spring 7 1 to pull arm 67 to the left, Fig. 2,thus causing pawl 71 to again engage ratchet 72 and lock the arm 56against movement relatiVe to ring 31 until the magnet 63 is againenergized. In its step-by-s'tep motion, .arm 56 travels a fractionalpart of a step when it descends and completes the step when it rises.

If, when arm 56 is rotated one ste in the counter-clockwise directionindicate by the smaller arrow, Fig. 1, as above described, there are anypins 41- protruding above the upper face of ring 31, these will beengaged by the lower ends or fingers of contact levers 49, whereupon thesaid-levers will be rot'ated on their axes and the correspondingcontacts 42 operated.

Magnet 63 remains energized during-the whole time that brush 10$ passesover segment 108, so that the transmitting contacts are set during theentire time'of transmission. .When magnet 63 becomes deiinergized, arm56 is raised by spring 59, and

. pawl71 falls into the next tooth of ratchet 72, and said arm isadvanced another space and is in position to transmit the next signal.In other words, after each transmission, the lower ends of transmittinglevers 19 leap overthe ins 41, which had pre' yiously operated t em,into position to be operated by the next adjacent row, of pins.

As the pins 41 come successively over the extension 83 of lever 82, theyare returned to normal as hereinbefore described.

It will be seen from the foregoing de scri tion that the operation ofsetting the com inations is entirely independent of the operationoftransmitting, so that either one may be taking place independently ofthe other, or both together at the same rate or at-difl'erent rates. Theoperator merely sets the signals. The machine stores them andautomaticallyxtransmits them. The ring 31 is made of such size that theoperator will beallowed ample time for any ordinary (lolays orinterruptions: I As hereinbefore etated, this rin' containsj'fin the'machine' herein describe 216sets ofpins {41 j allowin for six charactersto a wordg this nieanslit at the. said ring willcontain about thirty sixwords, so that if the operator worked faster than the transmission andcompletely filled the ring with signals to be transm tted, and thetransmissio were athirty. six words per the then" be {idle for 'a wholeminute at a time without impairing the line switch 115 operated ashereinafter described, 'by-magnet 26.

"The back coil terminal of relay 113 is connected to another insulatedspring contact 116 of said switch, while both coils receive current froma conductor 117 tapped on to the coil circuit of said relay at 118 andconnected to the positive main 110 through a suitable resistance 119.

Switch 115 is provided with an intermediate sprin contact 120 adapted tomove between an alternately engage contacts 111 and 116, but normallyheld under tension against contact 114 by an insulating stop 121 fast onthe plunger rod 25.

The forward contact 122 and ton e of relay 113 are iii' series with thecoils o magnet 26 from the local supply mains 110 and 111, in whichcircuit is also connected a suitable resistance 123.

tacts 114 and 120, and will close 'its forward contact 122, therebyenergizing magnet 26, whereupon said magnet will push its plunger 25 thelimit of its motion, since the tongue'of relay 113 will notreturn untilcontact 120 engages contact 116.

The tongue of relay 113 isreturned to its back stop on the closure ofcontacts 116 and 120.

For the purpose of automatically stopping the travel of arm5$ andthereby stopping the setting of contacts 42, when the transmission hascaught hp with the setting operation, that is when the transmittingcarriagehas gotten around to a point where t transmits the signalsimmediately set up, there is provided, among other parts, a switch 124having two insulated spring contacts 125, and 126 secured. to themachine frame and so locatedthat when the part, an insulated fingerthereon will strikes-a roj actionspring 125 and-- "open said switch. 1

Contact spring 126 of this switch is lele'c trica-lly. connected througha hand operated switch 128. t o..a terminal of the forwardieoilspringvl25 is electrically connected. to an takes the place of ring 106.

Segment 130 is -so located that. brush 12B ,of a. polarized relay: 129,while contact 104 will arrive on it just before brush 100 reaches thefirst segment in ring 98. An-

mitting segments in ring 98.

Between the front and'back coils of relay 129, the magnet coil circuitof the relay is.

tapped by a conductor 133 which connects through a suitable resistance134 with the positive current supply main 110. v

The tongue of relay 129 is connected t6 negative main 111, and theforward contact of said relayis connected though coils of magnet-63"anda resistance 135 with the positive main.

Relay 129 is employed in order to prevent the opening of switch contacts125, 126, from interfering with the transmission of magnet 63 wereopened by switch-124 di signal and consequently cause an error. Sincetherelay 129 cannot act to either open r close the circuit of magnet 63,except ust before or just after a signal interval, owing to thedisposition of segments 130 and 132, the signatwillfeither be.transmitted completely or not at all. a

As long as switch 124 remains closed, magnet 63 is energized once oneach revolution of brushes 104, 105, as brush 104 engages segment 130,and the tongue of relay 129 is returned to its back stop on everyrevolution of 'said brushes as brush 104 engages segment 132. l

When finger 127 on the transmitting carriage engages extension of springcontact 125, however, the circuit'of the forward coil of relay 129 willbe broken, so that transmission will be automatically stopped.

'When the transmission has caught up with the setting operation, thatis, when the transmitting carriage has gotten around to a point where ittransmits'the signalsv immediately set up, and the keyboard operatordesires to get a lead on the transmission, he may open hand switch 128,and continue the operation of the keyboard; Opening switch 128 breaksthe circuit of magnet '63 and therefore stops transmission; When the operator has stored up the ;desired quantity of signals he may thencloseflswitch 128, when the transmission will. ,belresumed.

The rotar distributing device or sun'- flower, whie actually in sion, isin many of th a master transmitter.v

Having now describe specific apparatus em I I it should be'understoodflthfit ble to considerable m tionwithout exaims denominatedes the transmis-z,

this is suscepti-'- t'neans being mutually independent.

I 2. Transmitting apparatus for electric telegraphs, comprising a seriesof groups of movable elements, mechanism for setting said elements incode combinations according to the signal to be transmitted, signaltransmitting means, and automatically act ing means to effect relativemotion between successive groups of said elements and said a signalalready started. If the circuit of combination of elements set for anygiven rectly, this might occur 1n the middle ofa ransmitting means tooperate the latter, the

signal acting upon said transmitting means simultaneously.

3. Transmitting apparatus for electric telegraphs, comprising a seriesof groups of movable elements, mechanism for setting said elements incode combinations corresponding to the respective signals to betransmitted, signal transmitting means, key

controlled mechanism adapted to bring said groups of elementssuccessively into opera" tive relation with said setting riiechanism,and electrically controlled means to elfect relative step-by-step motionbetween said elements andsaid transmitting mechanism to operate thelatter, the timing of the operation for said setting mechanism and saidelectrically operated means being mutually independent.

4. Transmitting apparatus for electric telegraphs, comprising a seriesof groups of movable elements, a common support therefor, mechanism toset said elements of the respective groups in code formation corresponding each to a combinatidn of impulses forming an individualcharacter signal, a second support relatively movable with respect tothe first mentioned support, a group of elements moval lly mounted onsaid sec ond support, means to bring the elements upon the tworelatively movable into operative relation, mittin mea'ns. operated tion0 the elements on tivelvmovable supports.

5. Transmitting apparatus for electric telegraphs, comprising a seriesof groups of movable elements, a common support therefor, keycontrolledpower operated mechanism to set said elements of the respective groupsin code formation, a second support relat vely movable with respect tothe first mentioned support, a group of elements and signal transby theconjoint. ae-

the two said role;

lit)

supports cessively into operative position to be set, and signaltransmitting means operated by said elements when set. i

15. Transmitting apparatus for electric telegraplis, comprising a seriesof groups of movable elements, mechanism for setting said elementsaccording to the signal to be transmitted, signal transmitting means,power means to ,efiect relative motion between successive groups ofSaid. elementsand saidtransmitting means to operate the latter, andperiodically operating electrical means acting only after impulsescorresponding to a complete signal have been transmitted and before thefirst impulse'for a succeeding signal has been transmittedto effect theoperation of said power means. I?

16. Transmitting apparatus for electric 4 telegraphs, COIIIPI'ISIIlg aseries of movable elements, mechanism for setting said elements in codecombinations according to the signal to be transmitted, signaltransmitting mechanism, means to efl'ect relative motion between saidelements and said transmittin mechanism to operate the latter from saiments, means comprising a member havin' a uniform movementiindependentof said e ements and acting at regular intervals, totime the operationat said transmitting means,v

the operation 0f said element setting meclr anism and'thesaid meansbeing mutually independent, and means to automatically restore. saidelements to normal. q

18. Transmitting apparatus for electric telegraphsgcompnsing arotatablymounted, plate, a series ofgroups of-elements movablr meant-edvo! .said' plate and arranged. to?

travel inc -circular path; a keyboard, sele'ctive mechanism operated bsaid'ke board to set said elements-in accor anoewit jthjcfsig nal to betransmitted, mechanism; including an clectro magnet to impartstep-by-step rotary otion tofsaid'plate, a contactcarrying carriage,an'angularly movable for said carriage, means including agsprmgundertension tending to-lmove said carriage -.snpport counter totl1e"'moveme1'1t of sandfiiat'e to bringisaicl contacts into operativerelation with said, groups of elements. successively, an electro-magnet,an escapement cooperating with said spring to operate said carriagesupport, and means to periodically energize said magnet.

19. Transmitting apparatus for electric have been transmitte impulse ofa succeeding signal. has been telegraphs, comprising a series of groupsof signal controlling elements, mechanism to selectively operate saidelements, according to the signal to be transmitted, means controlled bysaid elements for transmitting '70 electrical'si a1 impulses, a magnetalso eontrolling said signal transmitting means, and means operatingsaid magnet only-after im-. pulses corresponding to'a compl te signalave been transmitted and before\ the first signal h s b'en impulse for asucceeding transmitted.

20. Transmitting apparatus for electric telegraphs, comprising aseries'ofgroups of movable elements, means 0 eratlve upon successivegroups of said e ements to set them in varying code combinations, eachcombination corresponding to a signal to be subsequently transmitted, agroup of'mov able elements correspondin in number to those constitutingthe individual groups of the first mentioned elements, means con trolledby the first mentioned elements, one group at a time, to arrange thesecond mentioned elements in successive code formations corresponding tothe arrangement of the elements in the respective groups of the firstmentioned elements, means to render 'said arranging means operative onlyin the the first mentioned elements,

21. Transmitting control of the second mentioned elements by a apparatusfor electric telegraphs, comprising a series of movableelements,mechanism for, setting said elements according to the signals to betransmitted, electrical signal transmittin means controlled by saidelements, and e ectrical means comprising a switch acting only afterimpulses correspondin to a complete signal and before thefirsttransmitted to efl'ect relative movementbetween saidtransmitting meansand said ele ments; j g

22. Transmitting apparatusv for electric telegraphs, comprisin a seridsof groups of movable elements, a keyboard, mechanism forming operativeconnection between the keys of said ke board and the said elements foroperating e ements of each group in code combinations corresponding tothe signal to be transmitted, a group of transmitting elements, means tobring said groups of transmitting elements into engagement with saidgroups of movable elements and so set said transmitting elements in saidcombinations, and means acting subsequently to transmit the signal. s

23. Transmitting apparatus for electric telegraphs, comprising a, seriesof movable elements, mechanism for setting said elements in codecombinations corresponding to 35 .tive connection between said keyboardand movably mounted on said second support,

automatic means to brin the elements upon the two relatively movab e anports into operative relation, and signs means operated by the conjointaction'of the elements on the two said relatively movable supports. A

'6. Transmitting apparatus for electr1c. telegraphs, comprising .a itsboard, permutation mechanism operated t ereby,. a ser es of groups ofmovable elements,,mpans con n e trolled by said permutation lneiihl setsaid elements in the indivldual groups in various combinations,;a commonsup ort transmitting for all said elements,mea'ns controlle by saidkeyboard to cited; relative motion between said support and said elementsetting 1 means, a series of-members corres nding n number to theelements in eat: of 581d groups, a carria e sup orting said members,

a mechanism toe ect re ative motion between naling transmitting meansoperated by said members.

said support and carriage to bring the members on said'carriage intooperative relat on with successive groups of elements carried by saidcommon support, and electrical sig-.

7. Transmitting apparatus for electric telegraphs, comprising a movablesupportingl member, a series of groups of elements mov-.

ably mounted on sand member, the number of, said ele'ments'in each groupbeing'thesame and corresponding respectively to impulse periods allottedthe respective signals, a keyboard, mechanism forming operaelements toset said elements in the respective groups in code combinationscorresponding to the impulses which go to form given signals, a seriesof contact operating members adapted to be operated by said elementswhen set, and mechanism for efiecting relative step-by-step movementbetween said movable supporting member and said contact operatingmembers to eifect the operation of the latter.

8. Transmitting apparatus l for electric I telegraphs, comprising aseries of groups of fof'said elements s1 movable elements, a keyboard,mechanism forming operative connection between the keys of saidkeyboardtand the said elements for operating said groups ofelementssuccessively and the elements of each sepsgate,

ha 51 gm" minis-nee" ultaneoasl-y into opera+ tive. relation with saidtransmitting means.

"9. Transmitting apparatus 'for' electric telegraphs, comprising amovable web or plate, a series ofroups of Ipins movably mounted on saidp 'ate, a ke oard, mochanism forming operative connection between thekeys of saidke board and the said pins for operating .sai groups Lofpins succesplate', a sen r mounted on said p ate, akey card, mecha- Vnism forming operative connection between a to move sai carriageiiinnopposite direclatter, and mechanism to automatically stop ating saidcontacts sively and the pins in each cup in combinations correspondingto t c slgnal to be transmitted, a series of electrical contactsoperated by said pins, a carriage carrying said contacts, and mechanismto move said carriage in an o posite direction to the movement of saidwe or late and thereby cause the operation of said contacts by sa dpins.

10. Transmitting apparatus for electric telegraphq compr1sing a movableweb or oups of ins movably tion to the movement of'said web or plate,and electrically controlled means operating independently of the time ofoperation of said keyboard to control the operation of said carriageoperating means.

11. Transmitting apparatus for electric telegraphs, comprising a seriesof movable elements, mechanism for selectin said elements in codecombinations accor ing to the signal to be transmitted, power operatedmeans to operate the elements selected, and means controlled by saidelements to trans mit the signal selected.

12. Transmitting apparatus for electric telegraphs, comprising a movableweb, a series of groups of movable elements mounted in said web, meansincluding permutation V mechanism to operate vthe elements of eachseparate grou 1n combinations corresponding respective y to individualcharacter signals to be subsequently transmitted, signaltransmittingmcans controlled by said elements, means to effectrelativet'step-by-step motion between said elements and saidtransmitting means to effect the operation of the said movement.

13. Transmitting apparatus for electric I telegraphs comprising a seriesof transmitting switch contacts, a controller for oper- 1 d and movablerelative ytoe cots-aid motion, ycoperate'd-means cooperating with saidsprin to effect said motion.

14. Transmitting apparatus for electric teleg'raphs, comprising aseriesgof ,grou s of movableelements, a common support t 1amfor, keycontrolled mechanism to set said elements accordingto the signal to betransmitted, an" electro-niagnet '.-controlledfrom 1 Said k y eh eim-wfipe a nsj w hae magnet o bone e iss e a:

inga s ring under ten-' the respective signals to be transmitted, electric signal transmitting means controlled-by said elements, means tobring succeeding elements into operative relation with said transmittingmeans, and means acting after said elements have been brought intooperative relation with said transmitting means, to time the si als.

24. Transmitting apparatus for electric telegraphs, comprising amagazine having a plurality of members movably mounted therein andoperable at an arbitrary rate as compared with that of the'linetransmission to store'up in said magazine signals to be subsequentltransmitted, circuit controlling means, and a member having a uniformmovement and acting to effect coaction at regular intervals between saidsignal storage members and saidcircuit controlling means.

25. Transmitting apparatus for electric telegraplis comprising amagazine having a plurality of members movably mounted therein andoperable at an arbitrary rate as compared with that of the linetransmission to store up in said magazine signals to be subsequentlytransmitted, circuit controlling means, and means to effect co=actionbetween said storage members and said controlling means at regularintervals, said means in eluding an electric circuit, a contact therein,and means to operate said contact at a uniform rate independent of therate of operation of said members in storing up the signals.

26. Transmitting apparatus for electric teleg-"aphs comprising a mainline, a series of branch circuits, a switch contact in each of saidbranch circuits and means to operate said contacts to connect saidbranch circuits successively to the main line and at regularly recurringintervals, a second switch contact .in each of said branch circuits, amagazine comprising a supporting member and a .plu-

rality of impulse selectors novably iounted thereon and adapted tocontrdl th operation of said second mentioned contacts, mechanism toeifect coaction between said impulse selectors and. said secondmentioned contacts at. regularly recurring intervals, and means operableindependently of the rate of operation of said second mentionedcontacts, .to operate said impulse selectors to store the signals to besubsequently transmitted.

27. Transmitting apparatus for electric telegraphs, comprising amagazine havin a series of elements movably mounted therein, means toset said elements in code combinations corresponding to ,the respectivesignals to be transmitted, a second series of elements, means to effectrelative movement between said two series of elements toefl'ectielements set in the first series, means to render said secondseries of elem'ents inoperasaid two series of elements to effect opera'tion of the second series by the first series in combinationscorresponding to the elements set in the first series, means to rendersaid second series of elements inoperative by the movement of the firstseries at will and independently of the operation of setting the firstseries, but only after the complete signal corresponding to thecombination already set has been transmitted, and signal transmittingmeans controlled by said sec ond series of elements.

29. In a'telegraph transmitter, a movable carrierggroups of circuitcontrollers carried thereby, keyboard selecting mechanism to set. thecircuit controllers in transi'nitting position, a transmitting lllilCicarrying a group ofcircuit clesei's and means to bring into engagementsaid groups of circuit closers with successive groups of circuitcontrollcrs, a master transmitter comprising contact devices separatelyconnected to the circuit closers for transmitting impulses therefrom tothe line in substantially reguin r succession. I

30. In a telegraph transmitter, a movable carrier, groups of adjustablecircuit controllers an-led thereby, a keyboard selecting 1110C iianismto set the circuit controllers in transmitting position, means fordriving the inovable earricrstep by step, a transmitting head carryingcircuit closers, said circuit closers engaging with successive groups ofcircuit controllers, and a master transmitter comprising. contactdevices sepa--' i'atelyconnected to the said circuit closers tosucessively transmit impulses therefrom,

and means to control the actionof the trans-- the carrier-equaldistances, the circuit of u said electromagnet being controlled from thekeyboard.

32. In a telegraph transmitter, a movable carrier, groups of circuitcontrollers carried thereby, a keyboard selecting mechanism to set thecircuit controllers in transmitting position, said keyboard including aunivering the movable carrier against movement in either direction whenthe feedmechanism is at rest.

34. In a telegraph transmitter, a movable carrier, circuit controllersarranged in groups of unit length supported on said carrier, atransmitting head having circuit closers equal in number to thecontrollers in a group, means for advancing Said head into engagementwith said controllers when the latter are at rest, andto hold said headin its advanced position until the impulses corresponding to the groupof set controllers have been transmitted.

'35. In a telegraph transmitter, a movable carrier, circuit controllerscarried thereby, a keyboard selecting mechanism to set the circuitcontrollers in transmitting position, and a depressing shoe operatedfrom the keyboard to restore thecircuitcontrollers to non-transmittingposition.

36. In a telegraph transmitter, aimovable carrier,- circuitcontrollerscarried thereby, a keyboard selecting mechanism to set the circuitcontrollers in transmitting position, a transmitting head comprising a.group of circuit closers, an electro-magnet to bring said circuitclosers into engagement with the cir cuit controllers, a, mastertransmitter comprlsmg contact devices, and contact devices connectedindividually tothe circuit closers, and a contact operated by the mastertrans} mitter to control the action of said magnet; 37. In a telegraphtransmitter, a movable.

carrier, circuit controllers} carried thereby,

a keyboard selecting mechanismto set the; clrcuit controllers intransmitting position,

' a transmitting head carryinga grou .of circuit closers, a magnet tobring sai circuit closers into engagement with.v successive groups ofcircuit controllers, a circuit reaker included in the circuit of saidsleek troagnet,-and means to control said cir-' cuit breaker by thetransmitting head.

38. In a telegraph transmitter, a movable carrier, ad ustable circuitcontrollers carried thereby, a keyboard selecting mechathe action of themaster transmitter on the transmitting head.

39. A magazine transmitter for electric telegraphs, comprising a storagemember, a series of groups of permutation elements movablymountedthereon, mechanism to set Said permutation elements in the respectivegroups in code combinations, a transmitting head having'a series ofcontact controlling members one for each of said permutation elements ina group, mechanism to advance said storage men] er to brlng successivegroups of said permutation elements into operative relation with saidsetting mechanism, and mechanism to move said transmitting headin anopposite direction to. the

' movement of said storage member to bring said contact controllingelements into operative relation with successive groups of saidpermutation elements to cause the set per.- mutation elements to actupon corresponding contact controlling'members to determine thetransmission of the signal.

40. Transmitting apparatus for electric telegraphs, comprising amagazine having a series of elements mounted thereon, means to set saidelements according to the respecfive-signal to be transmitted, meanscontrolled by said elements to transmit electric .signals correspondingto the elements set, and means to allot equal time intervals to all thesignals.

41-. Transmitting apparatus for electric 'telegraphs, comprising astorage member fhaving a series of elements mounted there- Qon, means'toset said elements according to successive signals to be transmitted, amaster, ,transmitterv adapted to transmit successive signalscorresponding to the elements set,

,and to allot equal time'intervalstd all the si als.

" n testimon whereof afiix my signature I in presence 0 two witnesses.

Witnesses:

Joan Hoornn, WALTER H. BmuNesLm.

' LOUIS MAXWELL POTTS.

